The aim of this thesis was to obtain information on the genotype and sex influence on carcass characteristics of pigs of the following final hybrids combinations: (CL x CLW) x CLW ? sire line, (CL x CLW) x (CLW ? sire line x Pn), (CL x CLW) x (D x Pn) and (CL x CLW) x (CLW ? sire line x D) with a balanced sex ratio (barrows: gilts). An influence of the genotype on the lean meat content has been proven, while the (CL x CLW) x (D x Pn) combination reached the highest values, with an average of 57.95 %. A statistical significance of differences was also found between the sexes, when gilts reached 58.06 % average lean meat content, compared to the barrows 54.70 % average lean meat content (3.36 % difference). The back fat thickness showed a high statistical significance in terms of genotype, the lowest back fat thickness was measured in the (CL x CLW) x (D x Pn) combination with value of 21.69 mm. Barrows reached higher values, the average height of gilts was 22.03 mm, 25.25 mm in barrows. In the loin eye area indicator, the genotype influence has not been proven. For gilts, the mean value of 5228 mm2, in barrows value of 4707 mm2. Content of main meat parts, or more precisely hams, presented statistically significant differences in terms of genotype. The (CL x CLW) x (D x Pn) combination reached the highest values, with content of 53.23 %, 21.9 % respectively. A significant statistical difference was determined also between sexes, with an average main meat parts of gilts and barrows 51.32 % and 48.45 %, respectively; in the case of ham 21.07 % and 19.98 %. The slaughter weight in relation to the lean meat content showed a very good value in the mass range less than 100 kg (57.84 %), but the muscle proportion 57.16 % has been positive even in the mass range 100 ? 109.9 kg.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:137006 |
| Date | January 2012 |
| Creators | VONDRUŠKA, Miroslav |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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